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United States Patent | 5,771,203 |
Soubaras | June 23, 1998 |
The invention relates to a seismic prospection method in which a seismic disturbance is generated in the sub-soil and sensors are used to pick up seismic data, the seismic data being processed to deduce useful information concerning the geology of the sub-soil, the seismic data containing a signal y.sub.0 that is to be isolated, said signal y.sub.0 being present in the seismic data embedded in an additive signal. The method comprises the steps consisting in: 1) for .alpha. given integer p, computing a prediction error filter a having p coefficients and providing best cancellation of the signal y.sub.0 ; 2) applying the self-deconvoluted prediction error filter to the seismic data to obtain filtered data in which the signal y.sub.0 is absent; and 3) subtracting the filtered data from the initial data to obtain processed data containing the signal y.sub.0 without the additive signal.
Inventors: | Soubaras; Robert (Orsay, FR) |
Assignee: | Compagnie Generale de Geophysique (Massy, FR) |
Appl. No.: | 649694 |
Filed: | May 22, 1996 |
PCT Filed: | September 25, 1995 |
PCT NO: | PCT/FR95/01231 |
371 Date: | May 22, 1996 |
102(e) Date: | May 22, 1996 |
PCT PUB.NO.: | WO96/09562 |
PCT PUB. Date: | March 28, 1996 |
Sep 23, 1994[FR] | 94 11398 |
Current U.S. Class: | 367/46; 367/45; 702/17; 702/77 |
Intern'l Class: | G01V 001/36 |
Field of Search: | 367/45,46 364/421 |
4630242 | Dec., 1986 | Done | 367/73. |
4853903 | Aug., 1989 | Linville, Jr. et al. | 367/46. |
5182729 | Jan., 1993 | Duren et al. | 367/38. |
5400265 | Mar., 1995 | Kauppinen | 364/576. |
Foreign Patent Documents | |||
730744 | Sep., 1996 | EP. | |
9609562 | Mar., 1996 | WO. |
Soufaras, R, 57th Bage Conf., Jun. 2, 1995; p. No. A 051, vol. 1. Mendel, S.M.;Geophysical Prospecting , V. 25, #4, pp. 692-698, Dec. 1977; Abst. Only Herewith. Mahalanabis, et al., "A Fast Optimal Deconvolution Algorithm for Real Seismic Data Using Kalman Predictor Model," pp. 216-221 IEEE Transactions on Geoscience and Remote Sensing(Oct. 1981). |